What is Cummins camshaft?

The camshaft is a component in a piston engine. Its function is to control the opening and closing of the valve. Camshafts have high requirements in terms of strength and support, and their material is generally special cast iron Because the valve motion law is related to the power and operating characteristics of an engine, the camshaft design occupies a very important position in the engine design process.

Cummins camshaft constructure

The main body of the camshaft is a cylindrical rod with the same length as the cylinder group. There are several cams on it to drive the valve. One end of the camshaft is the bearing support point, and the other end is connected with the driving wheel. Generally speaking, in an in-line engine, one cam corresponds to one valve.

Common fault

Common failures of camshafts include abnormal wear, abnormal noise, and breakage. Symptoms of abnormal wear often occur before abnormal noise and breakage occur. Abnormal wear of the camshaft will cause the gap between the camshaft and the bearing seat to increase, and the camshaft will undergo axial displacement when it moves, resulting in abnormal noise. The camshaft sometimes has serious failures such as breakage. So we should avoid oil pump long time lack of oil, lubrication passage blocked, brokend hydraulic tappet or severely worn, severely poor lubrication, poor quality of the camshaft, and broken camshaft timing gear, etc. In some cases, the failure of the camshaft is caused by man-made reasons, especially when the camshaft is not properly disassembled and assembled during engine maintenance.

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